Seattle’s I-405 Corridor Gears Up for Major Transit Upgrade with $3 Billion Plan

Washington State Department of Transportation (WSDOT) is undertaking a significant $3 billion project to upgrade the Interstate 405 (I-405) corridor, a vital artery serving Seattle’s rapidly growing Eastside suburbs. The initiative includes the integration of a new Bus Rapid Transit (BRT) network, known as “Stride,” aimed at enhancing mobility and mitigating increasing congestion.

The Eastside region is experiencing substantial growth, making the expansion of transit infrastructure crucial. The Stride BRT network, comprising nearly 50 miles of dedicated bus routes, is designed to handle greater trip demand without exacerbating freeway congestion. This ambitious project seeks to provide a reliable and efficient transit alternative for commuters.

Por que importa

The Stride BRT network will consist of three distinct lines. The S1 line is scheduled to open in 2028, connecting Lynnwood and Downtown Bellevue. The S2 line, also slated for a 2029 opening, will extend south to Renton and west to Burien. A third line, the S3, will serve the SR-522 corridor and is expected to open in 2028. These services are planned to operate with buses arriving every 10 minutes during peak times, offering a frequent and dependable option for riders.

While some infrastructure, such as triple-decker freeway interchange stations like the one at NE 85th Street in Kirkland, may not represent ideal urban design, they are engineered to facilitate quick BRT service. These designs allow buses to efficiently enter and exit the freeway using dedicated lanes, minimizing delays. Riders will experience swift transit even while navigating complex interchanges.

Contexto

The investment in I-405 and the Stride BRT network is a response to the projected increase in travel demand. The plan aims to ensure that the heavily trafficked freeway can accommodate future needs, preventing a further decline in traffic flow. By providing a robust BRT system, WSDOT and Sound Transit are looking to offer a viable alternative to single-occupancy vehicle trips, thereby improving overall corridor efficiency.

Key facts

This development signifies a major commitment to enhancing public transportation in the Seattle metropolitan area. The integration of BRT with freeway improvements is a strategy to manage urban growth and its associated traffic challenges. The project promises to improve connectivity for residents and workers on the Eastside, offering a more sustainable and efficient means of travel.

Source: The Urbanist – Sunday Video: WSDOT’s $3 Billion I-405 Fix, with Stride BRT Inbound (https://www.theurbanist.org/sunday-video-wsdots-3-billion-i-405-fix-with-stride-brt-inbound/)